st: how to get a scalar value of the column sum?

[Olena Stavrunova <ostavrun@blue.weeg.uiowa.edu>]

Could you, please, let me know how to obtain the scalar for the value of the 
column sum? I need the value I get using "egen sum(x)", but not the column of 
these values, but just a single number which stata would terat as a scalar.
Thank you.

Olena Stavrunova
S216 Pappajohn
University of Iowa
Iowa City, IA 52242-1000
(319)335-0494

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